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Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now! https://www.khanacademy.org/science/hs-chemistry/x2613d8165d88df5e:chemical-reactions/x2613d8165d88df5e:balancing-chemical-equations/v/balancing-more-complex-chemical-equation Want to explore more? Check out the full Chemical reactions playlist here: https://youtube.com/playlist?list=PLSQl0a2vh4HCMPYDKDWzckresmNj5geHf&si=5k_qLv5ROTvEOH3R A balanced chemical equation shows the same number of each type of atom on both sides of the arrow. In this example, we balance the combustion reaction of ethylene, C₂H₄, and provide tips on how to balance more complex chemical equations. Sections: 00:00 - Introduction to combustion reaction 00:28 - Interpreting the chemical equation 01:01 - Strategy for balancing equations 02:16 - Balancing carbon atoms 02:55 - Balancing hydrogen atoms 03:33 - Balancing oxygen atoms 04:29 - Final balanced chemical equation ------------------ Khan Academy is a nonprofit organization with the mission of providing a free, world-class education for anyone, anywhere. We offer quizzes, questions, instructional videos, and articles on a range of academic subjects, including math, biology, chemistry, physics, history, economics, finance, grammar, preschool learning, and more. We provide teachers with tools and data so they can help their students develop the skills, habits, and mindsets for success in school and beyond. Khan Academy has been translated into dozens of languages, and 15 million people around the globe learn on Khan Academy every month. As a 501(c)(3) nonprofit organization, we would love your help! Donate or volunteer today! Donate here: https://www.khanacademy.org/donate?utm_source=youtube&utm_medium=desc Volunteer here: https://www.khanacademy.org/contribute?utm_source=youtube&utm_medium=desc